873 lines
36 KiB
C
873 lines
36 KiB
C
/******************************************************************************\
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* *
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* SimpleCUDD library (www.cs.kuleuven.be/~theo/tools/simplecudd.html) *
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* SimpleCUDD was developed at Katholieke Universiteit Leuven(www.kuleuven.be) *
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* *
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* Copyright Katholieke Universiteit Leuven 2008 *
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* *
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* Author: Theofrastos Mantadelis, Angelika Kimmig, Bernd Gutmann *
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* File: ProblogBDD.c *
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* *
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********************************************************************************
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* *
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* Artistic License 2.0 *
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* *
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* Copyright (c) 2000-2006, The Perl Foundation. *
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* *
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* Everyone is permitted to copy and distribute verbatim copies of this license *
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* document, but changing it is not allowed. *
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* *
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* Preamble *
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* *
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* This license establishes the terms under which a given free software Package *
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* may be copied, modified, distributed, and/or redistributed. The intent is *
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* that the Copyright Holder maintains some artistic control over the *
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* development of that Package while still keeping the Package available as *
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* open source and free software. *
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* *
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* You are always permitted to make arrangements wholly outside of this license *
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* directly with the Copyright Holder of a given Package. If the terms of this *
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* license do not permit the full use that you propose to make of the Package, *
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* you should contact the Copyright Holder and seek a different licensing *
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* arrangement. *
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* Definitions *
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* *
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* "Copyright Holder" means the individual(s) or organization(s) named in the *
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* copyright notice for the entire Package. *
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* *
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* the Package, in accordance with the Copyright Holder's procedures. *
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* "You" and "your" means any person who would like to copy, distribute, or *
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* modify the Package. *
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* may consist of either the Standard Version, or a Modified Version. *
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* mean licensing fees. *
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* "Standard Version" refers to the Package if it has not been modified, or has *
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* "Modified Version" means the Package, if it has been changed, and such *
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* changes were not explicitly requested by the Copyright Holder. *
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* "Original License" means this Artistic License as Distributed with the *
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* Standard Version of the Package, in its current version or as it may be *
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* modified by The Perl Foundation in the future. *
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* Permission for Use and Modification Without Distribution *
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* *
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* (1) You are permitted to use the Standard Version and create and use *
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* Modified Versions for any purpose without restriction, provided that you do *
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* not Distribute the Modified Version. *
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* (2) You may Distribute verbatim copies of the Source form of the Standard *
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* (3) You may apply any bug fixes, portability changes, and other *
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* modifications made available from the Copyright Holder. The resulting *
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* Package will still be considered the Standard Version, and as such will be *
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* subject to the Original License. *
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* *
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* (4) You may Distribute your Modified Version as Source (either gratis or for *
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* Version. *
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* (c) allow anyone who receives a copy of the Modified Version to make the *
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* Source form of the Modified Version available to others under *
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* (i) the Original License or *
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* (ii) a license that permits the licensee to freely copy, modify and *
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* redistribute the Modified Version using the same licensing terms that apply *
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* available in that license fees are prohibited but Distributor Fees are *
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* allowed. *
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* (5) You may Distribute Compiled forms of the Standard Version without the *
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* that the instructions are invalid, then you do not forfeit any of your *
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* rights under this license. *
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* *
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* (6) You may Distribute a Modified Version in Compiled form without the *
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* Source, provided that you comply with Section 4 with respect to the Source *
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* of the Modified Version. *
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* Aggregating or Linking the Package *
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* (7) You may aggregate the Package (either the Standard Version or Modified *
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* Version) with other packages and Distribute the resulting aggregation *
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* aggregation. *
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* (8) You are permitted to link Modified and Standard Versions with other *
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* Package, and Distribute the result without restriction, provided the result *
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* does not expose a direct interface to the Package. *
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* (9) Works (including, but not limited to, modules and scripts) that merely *
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* extend or make use of the Package, do not, by themselves, cause the Package *
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* to be a Modified Version. In addition, such works are not considered parts *
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* of the Package itself, and are not subject to the terms of this license. *
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* General Provisions *
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* *
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* (10) Any use, modification, and distribution of the Standard or Modified *
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* Versions is governed by this Artistic License. By using, modifying or *
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* distributing the Package, you accept this license. Do not use, modify, or *
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* distribute the Package, if you do not accept this license. *
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* *
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* (11) If your Modified Version has been derived from a Modified Version made *
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* by someone other than you, you are nevertheless required to ensure that your *
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* Modified Version complies with the requirements of this license. *
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* *
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* (12) This license does not grant you the right to use any trademark, service *
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* mark, tradename, or logo of the Copyright Holder. *
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* *
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* (13) This license includes the non-exclusive, worldwide, free-of-charge *
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* patent license to make, have made, use, offer to sell, sell, import and *
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* otherwise transfer the Package with respect to any patent claims licensable *
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* you institute patent litigation (including a cross-claim or counterclaim) *
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* against any party alleging that the Package constitutes direct or *
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* terminate on the date that such litigation is filed. *
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* *
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* (14) Disclaimer of Warranty: THE PACKAGE IS PROVIDED BY THE COPYRIGHT HOLDER *
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* AND CONTRIBUTORS "AS IS' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES. THE *
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* IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR *
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* NON-INFRINGEMENT ARE DISCLAIMED TO THE EXTENT PERMITTED BY YOUR LOCAL LAW. *
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* UNLESS REQUIRED BY LAW, NO COPYRIGHT HOLDER OR CONTRIBUTOR WILL BE LIABLE *
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING IN *
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* ANY WAY OUT OF THE USE OF THE PACKAGE, EVEN IF ADVISED OF THE POSSIBILITY OF *
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* SUCH DAMAGE. *
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* *
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* The End *
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* *
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\******************************************************************************/
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/* modified by Fabrizio Riguzzi in 2009 for dealing with multivalued variables:
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instead of variables or their negation, the script can contain equations of the
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form
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variable=value
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Multivalued variables are translated to binary variables by means of a log
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encodimg
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*/
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#include "simplecudd.h"
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#include <signal.h>
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#include <time.h>
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typedef struct _parameters {
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int loadfile;
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int savedfile;
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int exportfile;
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int inputfile;
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int debug;
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int errorcnt;
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int *error;
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int method;
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int queryid;
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int timeout;
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double sigmoid_slope;
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int online;
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int maxbufsize;
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char *ppid;
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} parameters;
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typedef struct _gradientpair {
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double probability;
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double gradient;
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} gradientpair;
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typedef struct _extmanager {
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DdManager *manager;
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DdNode *t, *f;
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hisqueue *his;
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namedvars varmap;
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} extmanager;
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double ProbBool(extmanager MyManager, DdNode *node, int bits, int nBit,int posBVar,variable v, int comp);
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double Prob(extmanager MyManager, DdNode *node, int comp);
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int correctPosition(int index,variable v,int posBVar);
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double ret_prob(extmanager MyManager, DdNode * bdd);
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int argtype(const char *arg);
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void printhelp(int argc, char **arg);
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parameters loadparam(int argc, char **arg);
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parameters params;
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void handler(int num);
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void pidhandler(int num);
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void termhandler(int num);
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double sigmoid(double x, double slope);
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void myexpand(extmanager MyManager, DdNode *Current);
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double CalcProbability(extmanager MyManager, DdNode *Current);
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double CalcProbabilitySigmoid(extmanager MyManager, DdNode *Current);
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gradientpair CalcGradient(extmanager MyManager, DdNode *Current, int TargetVar, char *TargetPattern);
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int patterncalculated(char *pattern, extmanager MyManager, int loc);
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char * extractpattern(char *thestr);
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int main(int argc, char **arg) {
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clock_t start, endc, endt;
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double elapsedc,elapsedt;
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extmanager MyManager;
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DdNode *bdd;
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bddfileheader fileheader;
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int i, ivarcnt, code;
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gradientpair tvalue;
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double probability = -1.0;
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char *varpattern;
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varpattern = NULL;
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code = -1;
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params = loadparam(argc, arg);
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if (params.errorcnt > 0) {
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printhelp(argc, arg);
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for (i = 0; i < params.errorcnt; i++) {
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fprintf(stderr, "Error: not known or error at parameter %s.\n", arg[params.error[i]]);
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}
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return -1;
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}
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if (params.online == 0 && params.loadfile == -1) {
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printhelp(argc, arg);
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fprintf(stderr, "Error: you must specify a loading file.\n");
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return -1;
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}
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if (params.method != 0 && arg[params.method][0] != 'g' && arg[params.method][0] != 'p' && arg[params.method][0] != 'o' && arg[params.method][0] != 'l') {
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printhelp(argc, arg);
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fprintf(stderr, "Error: you must choose a calculation method beetween [p]robability, [g]radient, [l]ine search, [o]nline.\n");
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return -1;
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}
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if (params.debug) DEBUGON;
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RAPIDLOADON;
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SETMAXBUFSIZE(params.maxbufsize);
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#ifndef _WIN32
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signal(SIGINT, termhandler);
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if (params.ppid != NULL) {
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signal(SIGALRM, pidhandler);
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alarm(5);
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} else {
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signal(SIGALRM, handler);
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alarm(params.timeout);
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}
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#endif
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if (params.online) {
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MyManager.manager = simpleBDDinit(0);
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MyManager.t = HIGH(MyManager.manager);
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MyManager.f = LOW(MyManager.manager);
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MyManager.varmap = InitNamedVars(1, 0);
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bdd = OnlineGenerateBDD(MyManager.manager, &MyManager.varmap);
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ivarcnt = GetVarCount(MyManager.manager);
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} else {
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fileheader = ReadFileHeader(arg[params.loadfile]);
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switch(fileheader.filetype) {
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case BDDFILE_SCRIPT:
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if (params.inputfile == -1) {
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printhelp(argc, arg);
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fprintf(stderr, "Error: an input file is necessary for this type of loading file.\n");
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return -1;
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}
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MyManager.manager = simpleBDDinit(fileheader.varcnt);
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MyManager.t = HIGH(MyManager.manager);
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MyManager.f = LOW(MyManager.manager);
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MyManager.varmap = InitNamedMultiVars(fileheader.varcnt, fileheader.varstart,fileheader.bvarcnt);
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if (LoadMultiVariableData(MyManager.manager,MyManager.varmap, arg[params.inputfile]) == -1) return -1;
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start = clock();
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bdd = FileGenerateBDD(MyManager.manager, MyManager.varmap, fileheader);
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endc=clock();
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elapsedc = ((double) (endc - start)) / CLOCKS_PER_SEC;
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printf("elapsed_construction(%lf).\n",elapsedc);
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ivarcnt = fileheader.varcnt;
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break;
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case BDDFILE_NODEDUMP:
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if (params.inputfile == -1) {
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printhelp(argc, arg);
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fprintf(stderr, "Error: an input file is necessary for this type of loading file.\n");
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return -1;
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}
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MyManager.manager = simpleBDDinit(fileheader.varcnt);
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MyManager.t = HIGH(MyManager.manager);
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MyManager.f = LOW(MyManager.manager);
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MyManager.varmap = InitNamedVars(fileheader.varcnt, fileheader.varstart);
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bdd = LoadNodeDump(MyManager.manager, MyManager.varmap, fileheader.inputfile);
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ivarcnt = fileheader.varcnt;
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break;
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default:
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fprintf(stderr, "Error: not a valid file format to load.\n");
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return -1;
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break;
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}
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}
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#ifndef _WIN32
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alarm(0);
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#endif
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// problem specifics
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if (bdd != NULL) {
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ivarcnt = RepairVarcnt(&MyManager.varmap);
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code = 0;
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/*
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if (params.inputfile != -1) {
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if (LoadVariableData(MyManager.varmap, arg[params.inputfile]) == -1) return -1;
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if (!all_loaded(MyManager.varmap, 1)) return -1;
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}*/
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MyManager.his = InitHistory(ivarcnt);
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if (params.method != 0) {
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switch(arg[params.method][0]) {
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case 'g':
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for (i = 0; i < MyManager.varmap.varcnt; i++) {
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if (MyManager.varmap.vars[i] != NULL) {
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varpattern = extractpattern(MyManager.varmap.vars[i]);
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if ((varpattern == NULL) || (!patterncalculated(varpattern, MyManager, i))) {
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tvalue = CalcGradient(MyManager, bdd, i + MyManager.varmap.varstart, varpattern);
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probability = tvalue.probability;
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double factor = sigmoid(MyManager.varmap.dvalue[i], params.sigmoid_slope) * (1 - sigmoid(MyManager.varmap.dvalue[i], params.sigmoid_slope)) * params.sigmoid_slope;
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if (varpattern == NULL) {
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printf("query_gradient(%s,%s,%1.12f).\n", arg[params.queryid], MyManager.varmap.vars[i], tvalue.gradient * factor);
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} else {
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varpattern[strlen(varpattern) - 2] = '\0';
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printf("query_gradient(%s,%s,%1.12f).\n", arg[params.queryid], varpattern, tvalue.gradient * factor);
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}
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ReInitHistory(MyManager.his, MyManager.varmap.varcnt);
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}
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if (varpattern != NULL) free(varpattern);
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} else {
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fprintf(stderr, "Error: no variable name given for parameter.\n");
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}
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}
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if (probability < 0.0) {
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// no nodes, so we have to calculate probability ourself
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tvalue = CalcGradient(MyManager, bdd, 0 + MyManager.varmap.varstart, NULL);
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probability = tvalue.probability;
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}
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printf("query_probability(%s,%1.12f).\n", arg[params.queryid], probability);
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break;
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case 'l':
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tvalue = CalcGradient(MyManager, bdd, 0 + MyManager.varmap.varstart, NULL);
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probability = tvalue.probability;
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printf("query_probability(%s,%1.12f).\n", arg[params.queryid], probability);
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break;
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case 'p':
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printf("probability(%1.12f).\n", CalcProbability(MyManager, bdd));
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break;
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case 'o':
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onlinetraverse(MyManager.manager, MyManager.varmap, MyManager.his, bdd);
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break;
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default:
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myexpand(MyManager, bdd);
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break;
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}
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} else {
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start=clock();
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// simpleNamedBDDtoDot(MyManager.manager, MyManager.varmap, bdd, "bdd.dot");
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printf("probability(%1.12f).\n", ret_prob(MyManager, bdd));
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endt=clock();
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elapsedt = ((double) (endt - start)) / CLOCKS_PER_SEC;
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printf("elapsed_traversing(%lf).\n",elapsedt);
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// myexpand(MyManager, bdd);
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}
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if (params.savedfile > -1) SaveNodeDump(MyManager.manager, MyManager.varmap, bdd, arg[params.savedfile]);
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if (params.exportfile > -1) simpleNamedBDDtoDot(MyManager.manager, MyManager.varmap, bdd, arg[params.exportfile]);
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ReInitHistory(MyManager.his, MyManager.varmap.varcnt);
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free(MyManager.his);
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}
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if (MyManager.manager != NULL) {
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KillBDD(MyManager.manager);
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exit(code);
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free(MyManager.varmap.dvalue);
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free(MyManager.varmap.ivalue);
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free(MyManager.varmap.dynvalue);
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for (i = 0; i < MyManager.varmap.varcnt; i++)
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{
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free(MyManager.varmap.vars[i]);
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free(MyManager.varmap.mvars[i].probabilities);
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free(MyManager.varmap.mvars[i].booleanVars);
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}
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free(MyManager.varmap.vars);
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free(MyManager.varmap.mvars);
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free(MyManager.varmap.bVar2mVar);
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}
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if (params.error != NULL) free(params.error);
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return code;
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|
|
}
|
|
|
|
/* Shell Parameters handling */
|
|
|
|
int argtype(const char *arg) {
|
|
if (strcmp(arg, "-l") == 0 || strcmp(arg, "--load") == 0) return 0;
|
|
if (strcmp(arg, "-e") == 0 || strcmp(arg, "--export") == 0) return 2;
|
|
if (strcmp(arg, "-m") == 0 || strcmp(arg, "--method") == 0) return 3;
|
|
if (strcmp(arg, "-i") == 0 || strcmp(arg, "--input") == 0) return 4;
|
|
if (strcmp(arg, "-h") == 0 || strcmp(arg, "--help") == 0) return 5;
|
|
if (strcmp(arg, "-d") == 0 || strcmp(arg, "--debug") == 0) return 6;
|
|
if (strcmp(arg, "-id") == 0 || strcmp(arg, "--queryid") == 0) return 7;
|
|
if (strcmp(arg, "-t") == 0 || strcmp(arg, "--timeout") == 0) return 8;
|
|
if (strcmp(arg, "-sd") == 0 || strcmp(arg, "--savedump") == 0) return 9;
|
|
if (strcmp(arg, "-sl") == 0 || strcmp(arg, "--slope") == 0) return 10;
|
|
if (strcmp(arg, "-o") == 0 || strcmp(arg, "--online") == 0) return 11;
|
|
if (strcmp(arg, "-bs") == 0 || strcmp(arg, "--bufsize") == 0) return 12;
|
|
if (strcmp(arg, "-pid") == 0 || strcmp(arg, "--pid") == 0) return 13;
|
|
return -1;
|
|
}
|
|
|
|
void printhelp(int argc, char **arg) {
|
|
fprintf(stderr, "\nUsage: %s -l [filename] -i [filename] -o (-s(d) [filename] -e [filename] -m [method] -id [queryid] -sl [double]) (-t [seconds] -d -h)\n", arg[0]);
|
|
fprintf(stderr, "Generates and traverses a BDD\nMandatory parameters:\n");
|
|
fprintf(stderr, "\t-l [filename]\t->\tfilename to load supports two formats:\n\t\t\t\t\t\t1. script with generation instructions\n\t\t\t\t\t\t2. node dump saved file\n");
|
|
fprintf(stderr, "\t-i [filename]\t->\tfilename to input problem specifics (mandatory with file formats 1, 2)\n");
|
|
fprintf(stderr, "\t-o\t\t->\tgenerates the BDD in online mode instead from a file can be used instead of -l\n");
|
|
fprintf(stderr, "Optional parameters:\n");
|
|
fprintf(stderr, "\t-sd [filename]\t->\tfilename to save generated BDD in node dump format (fast loading, traverse valid only)\n");
|
|
fprintf(stderr, "\t-e [filename]\t->\tfilename to export generated BDD in dot format\n");
|
|
fprintf(stderr, "\t-m [method]\t->\tthe calculation method to be used: none(default), [p]robability, [g]radient, [o]nline\n");
|
|
fprintf(stderr, "\t-id [queryid]\t->\tthe queries identity name (used by gradient) default: %s\n", arg[0]);
|
|
fprintf(stderr, "\t-sl [double]\t->\tthe sigmoid slope (used by gradient) default: 1.0\n");
|
|
fprintf(stderr, "Extra parameters:\n");
|
|
fprintf(stderr, "\t-t [seconds]\t->\tthe seconds (int) for BDD generation timeout default 0 = no timeout\n");
|
|
fprintf(stderr, "\t-pid [pid]\t->\ta process id (int) to check for termination default 0 = no process to check works only under POSIX OS\n");
|
|
fprintf(stderr, "\t-bs [bytes]\t->\tthe bytes (int) to use as a maximum buffer size to read files default 0 = no max\n");
|
|
fprintf(stderr, "\t-d\t\t->\tRun in debug mode (gives extra messages in stderr)\n");
|
|
fprintf(stderr, "\t-h\t\t->\tHelp (displays this message)\n\n");
|
|
fprintf(stderr, "Example: %s -l testbdd -i input.txt -m g -id testbdd\n", arg[0]);
|
|
}
|
|
|
|
parameters loadparam(int argc, char **arg) {
|
|
int i;
|
|
parameters params;
|
|
params.loadfile = -1;
|
|
params.savedfile = -1;
|
|
params.exportfile = -1;
|
|
params.method = 0;
|
|
params.inputfile = -1;
|
|
params.debug = 0;
|
|
params.errorcnt = 0;
|
|
params.queryid = 0;
|
|
params.timeout = 0;
|
|
params.sigmoid_slope = 1.0;
|
|
params.online = 0;
|
|
params.maxbufsize = 0;
|
|
params.ppid = NULL;
|
|
params.error = (int *) malloc(argc * sizeof(int));
|
|
for (i = 1; i < argc; i++) {
|
|
switch(argtype(arg[i])) {
|
|
case 0:
|
|
if (argc > i + 1) {
|
|
i++;
|
|
params.loadfile = i;
|
|
} else {
|
|
params.error[params.errorcnt] = i;
|
|
params.errorcnt++;
|
|
}
|
|
break;
|
|
case 2:
|
|
if (argc > i + 1) {
|
|
i++;
|
|
params.exportfile = i;
|
|
} else {
|
|
params.error[params.errorcnt] = i;
|
|
params.errorcnt++;
|
|
}
|
|
break;
|
|
case 3:
|
|
if (argc > i + 1) {
|
|
i++;
|
|
params.method = i;
|
|
} else {
|
|
params.error[params.errorcnt] = i;
|
|
params.errorcnt++;
|
|
}
|
|
break;
|
|
case 4:
|
|
if (argc > i + 1) {
|
|
i++;
|
|
params.inputfile = i;
|
|
} else {
|
|
params.error[params.errorcnt] = i;
|
|
params.errorcnt++;
|
|
}
|
|
break;
|
|
case 5:
|
|
printhelp(argc, arg);
|
|
break;
|
|
case 6:
|
|
params.debug = 1;
|
|
break;
|
|
case 7:
|
|
if (argc > i + 1) {
|
|
i++;
|
|
params.queryid = i;
|
|
} else {
|
|
params.error[params.errorcnt] = i;
|
|
params.errorcnt++;
|
|
}
|
|
break;
|
|
case 8:
|
|
if ((argc > i + 1) && (IsPosNumber(arg[i + 1]))) {
|
|
i++;
|
|
params.timeout = atoi(arg[i]);
|
|
} else {
|
|
params.error[params.errorcnt] = i;
|
|
params.errorcnt++;
|
|
}
|
|
break;
|
|
case 9:
|
|
if (argc > i + 1) {
|
|
i++;
|
|
params.savedfile = i;
|
|
} else {
|
|
params.error[params.errorcnt] = i;
|
|
params.errorcnt++;
|
|
}
|
|
break;
|
|
case 10:
|
|
if ((argc > i + 1) && (IsRealNumber(arg[i + 1]))) {
|
|
i++;
|
|
params.sigmoid_slope = atof(arg[i]);
|
|
} else {
|
|
params.error[params.errorcnt] = i;
|
|
params.errorcnt++;
|
|
}
|
|
break;
|
|
case 11:
|
|
params.online = 1;
|
|
break;
|
|
case 12:
|
|
if ((argc > i + 1) && (IsPosNumber(arg[i + 1]))) {
|
|
i++;
|
|
params.maxbufsize = atoi(arg[i]);
|
|
} else {
|
|
params.error[params.errorcnt] = i;
|
|
params.errorcnt++;
|
|
}
|
|
break;
|
|
case 13:
|
|
if ((argc > i + 1) && (IsPosNumber(arg[i + 1]))) {
|
|
i++;
|
|
params.ppid = (char *) malloc(sizeof(char) * (strlen(arg[i]) + 1));
|
|
strcpy(params.ppid, arg[i]);
|
|
} else {
|
|
params.error[params.errorcnt] = i;
|
|
params.errorcnt++;
|
|
}
|
|
break;
|
|
default:
|
|
params.error[params.errorcnt] = i;
|
|
params.errorcnt++;
|
|
break;
|
|
}
|
|
}
|
|
return params;
|
|
}
|
|
|
|
/* Error Handlers */
|
|
|
|
void handler(int num) {
|
|
fprintf(stderr, "Error: Timeout %i exceeded.\n", params.timeout);
|
|
exit(-1);
|
|
}
|
|
|
|
void pidhandler(int num) {
|
|
char *s;
|
|
if (params.timeout > 0) {
|
|
params.timeout -= 5;
|
|
if (params.timeout <= 0) {
|
|
fprintf(stderr, "Error: Timeout exceeded.\n");
|
|
exit(-1);
|
|
}
|
|
}
|
|
s = (char *) malloc(sizeof(char) * (19 + strlen(params.ppid)));
|
|
strcpy(s, "ps "); strcat(s, params.ppid); strcat(s, " >/dev/null");
|
|
if (system(s) != 0) exit(4);
|
|
#ifndef _WIN32
|
|
signal(SIGALRM, pidhandler);
|
|
alarm(5);
|
|
#endif
|
|
free(s);
|
|
}
|
|
|
|
void termhandler(int num) {
|
|
exit(3);
|
|
}
|
|
|
|
/* General Functions */
|
|
|
|
double sigmoid(double x, double slope) {
|
|
return 1 / (1 + exp(-x * slope));
|
|
}
|
|
|
|
/* Debugging traverse function */
|
|
|
|
void myexpand(extmanager MyManager, DdNode *Current) {
|
|
DdNode *h, *l;
|
|
hisnode *Found;
|
|
char *curnode;
|
|
curnode = GetNodeVarNameDisp(MyManager.manager, MyManager.varmap, Current);
|
|
printf("%s\n", curnode);
|
|
if ((Current != MyManager.t) && (Current != MyManager.f) &&
|
|
((Found = GetNode(MyManager.his, MyManager.varmap.varstart, Current)) == NULL)) {
|
|
l = LowNodeOf(MyManager.manager, Current);
|
|
h = HighNodeOf(MyManager.manager, Current);
|
|
printf("l(%s)->", curnode);
|
|
myexpand(MyManager, l);
|
|
printf("h(%s)->", curnode);
|
|
myexpand(MyManager, h);
|
|
AddNode(MyManager.his, MyManager.varmap.varstart, Current, 0.0, 0, NULL);
|
|
}
|
|
}
|
|
|
|
/* Angelikas Algorithm */
|
|
|
|
double CalcProbability(extmanager MyManager, DdNode *Current) {
|
|
DdNode *h, *l;
|
|
hisnode *Found;
|
|
char *curnode;
|
|
double lvalue, hvalue, tvalue;
|
|
if (params.debug) {
|
|
curnode = GetNodeVarNameDisp(MyManager.manager, MyManager.varmap, Current);
|
|
fprintf(stderr, "%s\n", curnode);
|
|
}
|
|
if (Current == MyManager.t) return 1.0;
|
|
if (Current == MyManager.f) return 0.0;
|
|
if ((Found = GetNode(MyManager.his, MyManager.varmap.varstart, Current)) != NULL) return Found->dvalue;
|
|
l = LowNodeOf(MyManager.manager, Current);
|
|
h = HighNodeOf(MyManager.manager, Current);
|
|
if (params.debug) fprintf(stderr, "l(%s)->", curnode);
|
|
lvalue = CalcProbability(MyManager, l);
|
|
if (params.debug) fprintf(stderr, "h(%s)->", curnode);
|
|
hvalue = CalcProbability(MyManager, h);
|
|
tvalue = MyManager.varmap.dvalue[GetIndex(Current) - MyManager.varmap.varstart];
|
|
tvalue = tvalue * hvalue + lvalue * (1.0 - tvalue);
|
|
AddNode(MyManager.his, MyManager.varmap.varstart, Current, tvalue, 0, NULL);
|
|
return tvalue;
|
|
}
|
|
|
|
/* Bernds Algorithm */
|
|
|
|
gradientpair CalcGradient(extmanager MyManager, DdNode *Current, int TargetVar, char *TargetPattern) {
|
|
DdNode *h, *l;
|
|
hisnode *Found;
|
|
char *curnode;
|
|
gradientpair lvalue, hvalue, tvalue;
|
|
double this_probability;
|
|
double *gradient;
|
|
if (params.debug) {
|
|
curnode = GetNodeVarNameDisp(MyManager.manager, MyManager.varmap, Current);
|
|
fprintf(stderr, "%s\n", curnode);
|
|
}
|
|
if (Current == MyManager.t) {
|
|
tvalue.probability = 1.0;
|
|
tvalue.gradient = 0.0;
|
|
return tvalue;
|
|
}
|
|
if (Current == MyManager.f) {
|
|
tvalue.probability = 0.0;
|
|
tvalue.gradient = 0.0;
|
|
return tvalue;
|
|
}
|
|
if ((Found = GetNode(MyManager.his, MyManager.varmap.varstart, Current)) != NULL) {
|
|
tvalue.probability = Found->dvalue;
|
|
tvalue.gradient = *((double *) Found->dynvalue);
|
|
return tvalue;
|
|
}
|
|
l = LowNodeOf(MyManager.manager, Current);
|
|
h = HighNodeOf(MyManager.manager, Current);
|
|
if (params.debug) fprintf(stderr, "l(%s)->", curnode);
|
|
lvalue = CalcGradient(MyManager, l, TargetVar, TargetPattern);
|
|
if (params.debug) fprintf(stderr, "h(%s)->", curnode);
|
|
hvalue = CalcGradient(MyManager, h, TargetVar, TargetPattern);
|
|
this_probability = sigmoid(MyManager.varmap.dvalue[GetIndex(Current) - MyManager.varmap.varstart], params.sigmoid_slope);
|
|
tvalue.probability = this_probability * hvalue.probability + (1 - this_probability) * lvalue.probability;
|
|
tvalue.gradient = this_probability * hvalue.gradient + (1 - this_probability) * lvalue.gradient;
|
|
if ((GetIndex(Current) == TargetVar) ||
|
|
((TargetPattern != NULL) && patternmatch(TargetPattern, MyManager.varmap.vars[GetIndex(Current)]))) {
|
|
tvalue.gradient += hvalue.probability - lvalue.probability;
|
|
}
|
|
gradient = (double *) malloc(sizeof(double));
|
|
*gradient = tvalue.gradient;
|
|
AddNode(MyManager.his, MyManager.varmap.varstart, Current, tvalue.probability, 0, gradient);
|
|
return tvalue;
|
|
}
|
|
|
|
char * extractpattern(char *thestr) {
|
|
char *p;
|
|
int i = 0, sl = strlen(thestr);
|
|
while((thestr[i] != '_') && (i < sl)) i++;
|
|
if (i == sl) return NULL;
|
|
i++;
|
|
p = (char *) malloc(sizeof(char) * (i + 2));
|
|
strncpy(p, thestr, i);
|
|
p[i] = '*';
|
|
p[i + 1] = '\0';
|
|
return p;
|
|
}
|
|
|
|
int patterncalculated(char *pattern, extmanager MyManager, int loc) {
|
|
int i;
|
|
if (pattern == NULL) return 0;
|
|
for (i = loc - 1; i > -1; i--)
|
|
if (patternmatch(pattern, MyManager.varmap.vars[i])) return 1;
|
|
return 0;
|
|
}
|
|
|
|
double Prob(extmanager MyManager, DdNode *node, int comp)
|
|
/* compute the probability of the expression rooted at node
|
|
nodes is used to store nodes for which the probability has alread been computed
|
|
so that it is not recomputed
|
|
*/
|
|
{
|
|
int mVarIndex,nBit,index;
|
|
variable v;
|
|
hisnode *Found;
|
|
double res;
|
|
double value;
|
|
|
|
|
|
if (Cudd_IsConstant(node))
|
|
{
|
|
value=Cudd_V(node);
|
|
if (comp)
|
|
{
|
|
return 0.0;
|
|
}
|
|
else
|
|
{
|
|
return 1.0;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
Found = GetNode1(MyManager.varmap.bVar2mVar,MyManager.his, MyManager.varmap.varstart, node);
|
|
|
|
if (Found!=NULL)
|
|
{
|
|
return Found->dvalue;
|
|
}
|
|
else
|
|
{
|
|
index=Cudd_NodeReadIndex(node);
|
|
mVarIndex=MyManager.varmap.bVar2mVar[index];
|
|
v=MyManager.varmap.mvars[mVarIndex];
|
|
nBit=v.nBit;
|
|
res=ProbBool(MyManager,node,0,nBit,0,v,comp);
|
|
AddNode1(MyManager.varmap.bVar2mVar,MyManager.his, MyManager.varmap.varstart, node, res, 0, NULL);
|
|
return res;
|
|
}
|
|
}
|
|
}
|
|
|
|
double ProbBool(extmanager MyManager, DdNode *node, int bits, int nBit,int posBVar,variable v, int comp)
|
|
/* explores a group of binary variables making up the multivalued variable v */
|
|
{
|
|
DdNode *T,*F;
|
|
double p,res;
|
|
double * probs;
|
|
int index;
|
|
probs=v.probabilities;
|
|
if (nBit==0)
|
|
{
|
|
if (bits>=v.nVal)
|
|
{
|
|
return 0.0;
|
|
}
|
|
else
|
|
{
|
|
p=probs[bits];
|
|
res=p*Prob(MyManager,node,comp);
|
|
return res;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
index=Cudd_NodeReadIndex(node);
|
|
if (correctPosition(index,v,posBVar))
|
|
{
|
|
T = Cudd_T(node);
|
|
F = Cudd_E(node);
|
|
bits=bits<<1;
|
|
res=ProbBool(MyManager,T,bits+1,nBit-1,posBVar+1,v,comp);
|
|
comp=(!comp && Cudd_IsComplement(F)) || (comp && !Cudd_IsComplement(F));
|
|
res=res+
|
|
ProbBool(MyManager,F,bits,nBit-1,posBVar+1,v,comp);
|
|
return res;
|
|
}
|
|
else
|
|
{
|
|
bits=bits<<1;
|
|
res=ProbBool(MyManager,node,bits+1,nBit-1,posBVar+1,v,comp);
|
|
res=res+
|
|
ProbBool(MyManager,node,bits,nBit-1,posBVar+1,v,comp);
|
|
return res;
|
|
}
|
|
}
|
|
}
|
|
|
|
int correctPosition(int index,variable v,int posBVar)
|
|
/* returns 1 is the boolean variable with index posBVar is in the correct position
|
|
currently explored by ProbBool */
|
|
{
|
|
int bvar;
|
|
bvar=v.booleanVars[posBVar];
|
|
|
|
return(bvar==index);
|
|
}
|
|
|
|
double ret_prob(extmanager MyManager, DdNode * bdd)
|
|
{
|
|
double prob;
|
|
/* dividend is a global variable used by my_hash
|
|
it is equal to an unsigned int with binary representation 11..1 */
|
|
prob=Prob(MyManager,bdd,Cudd_IsComplement(bdd));
|
|
|
|
return prob;
|
|
|
|
}
|